Steve,I have been encountering a constraint over and over again and thought I would share it with you. The mailbox size is apparently very small which leads to various members not being able to accept new messages. Is there any way to increase the space available? Of course, an easy solution would be for the members to regularly clean out their messages but that is not happening.

I have the pm mailbox size limits set as follows:

New User: 5 messagesRegistered User: 50 messagesMembers: 200 messages

Should I bump them up? I think 200 messages is more than enough, but I'm willing to increase it if there's a compelling reason. Users should use the "Prune Messages" feature from their inbox to clean up old messages.